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package com.sun.enterprise.security.auth.realm;
import com.sun.enterprise.security.auth.digest.impl.DigestProcessor;
import com.sun.enterprise.security.auth.digest.api.Password;
import com.sun.enterprise.security.auth.digest.impl.KeyDigestAlgoParamImpl;
import com.sun.enterprise.security.auth.digest.api.DigestAlgorithmParameter;
import com.sun.enterprise.security.auth.digest.api.Key;
import com.sun.enterprise.security.auth.digest.api.NestedDigestAlgoParam;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.spec.AlgorithmParameterSpec;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.catalina.util.MD5Encoder;
import static com.sun.enterprise.security.auth.digest.api.Constants.*;
/**
* Base class for all realms wanting to support Digest based authentication.
* @author K.Venugopal@sun.com
*/
public abstract class DigestRealmBase extends IASRealm implements DigestRealm {
private DigestValidatorImpl validator = null;
public DigestRealmBase() {
}
protected final boolean validate(final Password passwd, DigestAlgorithmParameter[] params) {
try {
return new DigestValidatorImpl().validate(passwd, params);
} catch (NoSuchAlgorithmException ex) {
_logger.log(Level.SEVERE,"invalid.digest.algo",ex);
}
return false;
}
private class DigestValidatorImpl extends DigestProcessor {
private Realm realm = null;
private DigestAlgorithmParameter data = null;
private DigestAlgorithmParameter clientResponse = null;
private DigestAlgorithmParameter key = null;
private String algorithm = "MD5";
private String realmName = null;
DigestValidatorImpl() {
}
protected final boolean validate(Password passwd, DigestAlgorithmParameter[] params) throws NoSuchAlgorithmException {
for (int i = 0; i < params.length; i++) {
DigestAlgorithmParameter dap = params[i];
if (A1.equals(dap.getName()) && (dap instanceof Key)) {
key = dap;
} else if (RESPONSE.equals(dap.getName())) {
clientResponse = dap;
} else {
data = dap;
}
}
setPassword(passwd);
try {
byte[] p1 = valueOf(key);
byte[] p2 = valueOf(data);
java.io.ByteArrayOutputStream bos = new java.io.ByteArrayOutputStream();
bos.write(p1);
bos.write(":".getBytes());
bos.write(p2);
MessageDigest md = MessageDigest.getInstance(algorithm);
byte[] derivedKey = null;
byte[] dk = md.digest(bos.toByteArray());
String tmp = new MD5Encoder().encode(dk);
derivedKey = tmp.getBytes();
byte[] suppliedKey = clientResponse.getValue();
boolean result = true;
if (derivedKey.length == suppliedKey.length) {
for (int i = 0; i < derivedKey.length; i++) {
if (!(derivedKey[i] == suppliedKey[i])) {
result = false;
break;
}
}
} else {
result = false;
}
return result;
} catch (IOException ex) {
Object[] msg =new String[1];
msg[0]=ex.getMessage();
_logger.log(Level.SEVERE,"digest.error",msg);
}
return false;
}
}
}